Question

Find the mean for the given sample data. Unless indicated otherwise, round your answer to one more decimal place than is present in the original data values. Andrew asked seven of his friends how many cousins they had. The results are listed below. Find the mean number of cousins. 15 12 5 14 4 4 6

Answer 1

8.57

Explanation:

Mean is defined as the ratio of the total sum of all the given datas to the total number of data present. It is expressed mathematically as;

`\overline x = ( \sum Xi)/(N)` where;

`\overline x = mean\\Xi= individual \ data\\N = total\ amount\ of \ data`

Given N = 7

`\overline x = (15+12+5+14+4+4+6)/(7)`

`\overline x= (60)/(7) \\\overline x = 8.57`

The mean number of cousins is 8.57